An orifice sleeve pull-up clamping platform

Abstract

The application relates to a hole sleeve pulling clamping platform, belonging to the technical field of pile foundation construction, which comprises a pulling clamping platform body, an annular plate fixedly connected to the top of the pulling clamping platform body, a steel pipe sleeve arranged in the pulling clamping platform body, a through hole matched with the steel pipe sleeve arranged in the pulling clamping platform body, and two screw locks arranged on the top of the pulling clamping platform body and symmetrically arranged on both sides of the through hole. The application has the beneficial effects that the mechanical multi-point locking structure can be formed through the arrangement of the plurality of cam locks and the two screw locks, the steel pipe sleeve can be effectively prevented from sinking and falling due to the dead weight during the pulling, the construction safety is ensured, the steel pipe sleeve during the pulling can be limited through the arrangement of the fixed top block, the position deviation of the steel pipe sleeve during the pulling is reduced, the cam lock and the screw lock locking structure are relatively simple, the cost is low, and the cam lock and the screw lock locking structure can be repeatedly used.

Description

Technical Field

[0001] This application relates to the field of pile foundation construction technology, and in particular to a hole opening sleeve pulling clamping platform. Background Technology

[0002] During pile foundation construction, steel casings serve as temporary support structures, playing a crucial role in ensuring construction safety and pile quality. To prevent the steel casings from becoming unrecoverable after the concrete has hardened, they must be pulled out promptly after the concrete pouring is completed. Currently, the industry commonly uses a combination of power head drive and upward pulling force to pull out the steel casings section by section. However, due to the large weight of the steel casings, they are prone to sinking or falling during the pulling process, which not only seriously affects construction efficiency but may also cause safety accidents, threatening construction personnel and equipment.

[0003] In the existing technology, the following solutions are mainly adopted to address the above problems: First, manual assistance is used for fixing, that is, construction workers use simple clamps or ropes to temporarily fix the sleeve. However, this method is labor-intensive and has poor fixing effect, and it is difficult to cope with the self-weight pressure of the steel sleeve. Second, a hydraulic clamping device is used, which uses a hydraulic cylinder to drive the clamps to hold the sleeve. Although the clamping force is strong, the equipment cost is high and the requirements for on-site installation space are strict, limiting its applicability in narrow spaces. Utility Model Content

[0004] In view of the above-mentioned problems in the prior art, the main objective of this application is to provide a hole sleeve pulling clamping platform.

[0005] The technical solution of this application is as follows: a pipe pulling and clamping platform includes a pulling and clamping platform body, an annular plate fixedly connected to the top of the pulling and clamping platform body, a steel pipe sleeve disposed inside the pulling and clamping platform body, a through hole adapted to the steel pipe sleeve being opened inside the pulling and clamping platform body, two screw locks disposed on the top of the pulling and clamping platform body, the two screw locks being symmetrically arranged and arranged on both sides of the through hole, six cam locks disposed on the top of the pulling and clamping platform body, the six cam locks being circumferentially distributed along the through hole, two fixed top blocks welded inside the annular plate, the inner side of the fixed top blocks being provided with an arc-shaped structure that fits against the outer wall of the steel pipe sleeve.

[0006] By adopting the above technical solution, a mechanical multi-point locking structure can be formed by setting multiple cam locks and two screw locks, which can effectively prevent the steel pipe sleeve from sinking and falling due to its own weight when it is pulled out, so as to ensure construction safety.

[0007] In a preferred embodiment, the screw lock includes a fixed seat, a threaded rod, a clamping block, a fixing block, and a clamping groove. Two fixed seats are fixedly connected to the top of the lifting and clamping platform body. The fixed seats are threadedly connected to the threaded rod inside. Two fixing blocks are welded to the outer wall of the steel pipe sleeve. The fixing blocks are provided with clamping grooves inside.

[0008] By adopting the above technical solution, the pressing block can be embedded in the pressing groove of the fixing block by rotating the threaded rod, thereby cooperating with the arc-shaped structure of the fixing top block to fit against the outer wall of the steel pipe sleeve.

[0009] In a preferred embodiment, a clamping block is fixedly connected to one end of each of the two threaded rods that are close to each other, and the clamping block is adapted to the corresponding clamping groove.

[0010] By adopting the above technical solution, the sinking force generated by its own weight can be effectively resisted.

[0011] In a preferred embodiment, the cam lock includes a slide rail, a clamping rod, an eccentric wheel, and a handle. The top of the lifting and clamping platform body is fixedly connected to six slide rails, and the top of each slide rail is slidably connected to a clamping rod.

[0012] By adopting the above technical solution, the eccentric wheel can be driven to move eccentrically by rotating the handle, thereby pressing against the clamping rod. In this way, the clamping purpose of the steel pipe sleeve can be achieved by using multiple clamping rods.

[0013] In a preferred embodiment, an eccentric wheel is rotatably mounted on the top of each slide rail, and a handle is fixedly connected to the outer side of each eccentric wheel. The eccentric position of the eccentric wheel abuts against the outer wall of the clamping rod.

[0014] By adopting the above technical solution, when the eccentric wheel does not contact the clamping rod, the clamping rod can be made to slide on the slide rail, thereby allowing the position of the clamping rod to be adjusted as needed.

[0015] In a preferred embodiment, a hexagonal knob is fixedly connected to the end of the threaded rod away from the clamping block, and the lifting and clamping platform body is a frame structure welded from steel profiles.

[0016] By adopting the above technical solution and using a hexagonal knob, the threaded rod can be rotated by the operator.

[0017] In a preferred embodiment, mounting holes are provided at all four corners of the lifting and clamping platform body, and anchor rods are inserted into the interior of each mounting hole.

[0018] By adopting the above technical solution, the entire assembly and disassembly can be convenient, greatly shortening the installation and disassembly time.

[0019] Compared with the prior art, the advantages and positive effects of this application are as follows:

[0020] 1. In this application, a mechanical multi-point locking structure can be formed by setting multiple cam locks and two screw locks, which can effectively prevent the steel pipe sleeve from sinking and falling due to its own weight during the lifting process, so as to ensure construction safety. In addition, the setting of the fixed top block can limit the position of the steel pipe sleeve during the lifting process, so as to reduce the positional deviation of the steel pipe sleeve during the lifting process. The cam lock and screw lock locking structure is relatively simple, low cost, and reusable.

[0021] 2. In this application, by rotating the threaded rod, the clamping block can be embedded in the clamping groove of the fixing block, and then cooperate with the arc-shaped structure of the fixing top block to fit against the outer wall of the steel pipe sleeve, thereby limiting the steel pipe sleeve and effectively resisting the sinking force generated by its own weight. Furthermore, by rotating the handle, the eccentric wheel can be driven to perform eccentric movement, thereby pressing against the clamping rod. In this way, multiple clamping rods can be used to achieve the purpose of clamping and fixing the steel pipe sleeve, forming a circumferential multi-point clamping force. Attached Figure Description

[0022] Figure 1 This application provides an overall perspective view of a hole-mouth sleeve pulling and clamping platform;

[0023] Figure 2 A partial schematic diagram of a casing pulling and clamping platform provided in this application;

[0024] Figure 3 This application provides a schematic diagram of a cam lock structure for a casing pulling and clamping platform.

[0025] Figure 4 This application provides a schematic diagram of the screw lock structure of a hole sleeve pulling clamping platform.

[0026] Legend: 1. Lifting and clamping platform body; 2. Steel pipe sleeve; 3. Annular plate; 4. Anchor rod; 5. Mounting hole; 6. Cam lock; 61. Slide rail; 62. Clamping rod; 63. Eccentric wheel; 64. Handle; 7. Screw lock; 71. Fixed seat; 72. Threaded rod; 73. Clamping block; 74. Fixed block; 75. Clamping groove; 8. Fixed top block; 9. Through hole. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] Reference Figure 1-4A pipe pulling and clamping platform includes a platform body 1, an annular plate 3 fixedly connected to the top of the platform body 1, a steel pipe sleeve 2 disposed inside the platform body 1, and a through hole 9 adapted to the steel pipe sleeve 2. Two screw locks 7 are symmetrically arranged on both sides of the through hole 9 at the top of the platform body 1. Six cam locks 6 are evenly distributed circumferentially along the through hole 9 at the top of the platform body 1. The internal structure has two fixed top blocks 8 welded together. The inner side of the fixed top blocks 8 is provided with an arc-shaped structure that fits against the outer wall of the steel pipe sleeve 2. With the setting of multiple cam locks 6 and two screw locks 7, a mechanical multi-point locking structure can be formed, which can effectively prevent the steel pipe sleeve 2 from sinking and falling due to its own weight when it is pulled out, so as to ensure construction safety. In addition, the fixed top blocks 8 can limit the position of the steel pipe sleeve 2 during the pulling process, so as to reduce the positional deviation of the steel pipe sleeve 2 during the pulling process. The locking structure of cam locks 6 and screw locks 7 is relatively simple, low cost, and reusable.

[0029] Specifically, the screw lock 7 includes a fixed seat 71, a threaded rod 72, a clamping block 73, a fixed block 74, and a clamping groove 75. Two fixed seats 71 are fixedly connected to the top of the lifting and clamping platform body 1. Each fixed seat 71 has a threaded rod 72 threadedly connected inside. Two fixed blocks 74 are welded to the outer wall of the steel pipe sleeve 2. By rotating the threaded rod 72, the clamping block 73 can be inserted into the clamping groove 75 of the fixed block 74. This, combined with the arc-shaped structure of the fixed top block 8, fits against the outer wall of the steel pipe sleeve 2, thereby limiting the position of the steel pipe sleeve 2 and effectively resisting the downward force generated by its own weight. Each fixed block 74 has a clamping groove 75 inside, and a clamping block 73 is fixedly connected to the end of each of the two threaded rods 72 that are close to each other. The clamping block 73 is adapted to the corresponding clamping groove 75. The cam lock 6 includes a slide rail 61, a clamping rod 62, an eccentric wheel 63 and a handle 64. The top of the lifting and clamping platform body 1 is fixedly connected to six slide rails 61. By rotating the handle 64, the eccentric wheel 63 can be driven to make eccentric movement, which can then clamp the clamping rod 62. In this way, the clamping and fixing of the steel pipe sleeve 2 can be achieved by using multiple clamping rods 62, forming a circumferential multi-point clamping force. When the eccentric wheel 63 does not collide with the clamping rod 62, the clamping rod 62 can be slid on the slide rail 61, so that the position of the clamping rod 62 can be adjusted according to the needs. The top of each slide rail 61 is slidably connected to the clamping rod 62.

[0030] Specifically, each slide rail 61 has an eccentric wheel 63 rotatably mounted on its top. Each eccentric wheel 63 has a handle 64 fixedly connected to its outer side. The eccentric position of the eccentric wheel 63 abuts against the outer wall of the clamping rod 62. Each threaded rod 72 has a hexagonal knob fixedly connected to its end away from the clamping block 73. The hexagonal knob allows the operator to rotate the threaded rod 72. The lifting and clamping platform body 1 is constructed of welded steel frame structure. Each of the four corners of the lifting and clamping platform body 1 has a mounting hole 5. Anchor rods 4 are inserted into each mounting hole 5. The lifting and clamping platform body 1 is fixed by the anchor rods 4 in the mounting holes 5, allowing for easy assembly and disassembly, significantly shortening the installation and disassembly time, and significantly improving construction efficiency.

[0031] Working principle: First, position the rotary drilling rig, align it with the center of the steel pipe sleeve 2, and lower the connector to connect with the steel pipe sleeve 2. Then, the power head of the rotary drilling rig outputs torque to rotate the connector, while simultaneously applying an upward pulling force to gradually pull the steel pipe sleeve 2 out of the borehole. When the upper section of the steel pipe sleeve 2 is completely pulled out, and the lower section of the steel pipe sleeve 2 is pulled out about 1m above the ground, the operator uses a hexagonal knob to rotate the threaded rod 72, allowing the clamping block 73 to embed into the clamping groove 75 of the fixing block 74, thereby achieving the clamping of the steel pipe sleeve 2. The sleeve 2 is limited, and the eccentric wheel 63 can be driven to move eccentrically by rotating the handle 64, which can then press against the clamping rod 62. In this way, multiple clamping rods 62 can be used to press and fix the steel sleeve 2, forming a circumferential multi-point clamping force, which can effectively resist the sinking force generated by its own weight. When the eccentric wheel 63 is not in contact with the clamping rod 62, the clamping rod 62 can be slid on the slide rail 61, so that the position of the clamping rod 62 can be adjusted according to the needs.

[0032] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0033] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A casing pull-out clamping platform, comprising a pull-out clamping platform body (1), characterized in that: The top of the lifting and clamping platform body (1) is fixedly connected to an annular plate (3). The inside of the lifting and clamping platform body (1) is provided with a steel pipe sleeve (2). The inside of the lifting and clamping platform body (1) is provided with a through hole (9) that matches the steel pipe sleeve (2). The top of the lifting and clamping platform body (1) is provided with two screw locks (7). The two screw locks (7) are symmetrically arranged and arranged on both sides of the through hole (9). The top of the lifting and clamping platform body (1) is provided with six cam locks (6). The six cam locks (6) are evenly distributed circumferentially along the through hole (9). The inside of the annular plate (3) is welded with two fixed top blocks (8). The inner side of the fixed top blocks (8) is provided with an arc-shaped structure that fits against the outer wall of the steel pipe sleeve (2).

2. The orifice sleeve pulling clamping platform according to claim 1, characterized in that: The screw lock (7) includes a fixed seat (71), a threaded rod (72), a clamping block (73), a fixed block (74), and a clamping groove (75). The top of the lifting clamping platform body (1) is fixedly connected to two fixed seats (71), and the inside of each fixed seat (71) is threaded with a threaded rod (72). The outer wall of the steel pipe sleeve (2) is welded with two fixed blocks (74), and the inside of each fixed block (74) is provided with a clamping groove (75).

3. The orifice sleeve pulling clamping platform according to claim 2, characterized in that: Each of the two threaded rods (72) has a clamping block (73) fixedly connected to one end of each threaded rod (72), and the clamping block (73) is adapted to the corresponding clamping groove (75).

4. The orifice sleeve pulling clamping platform according to claim 1, characterized in that: The cam lock (6) includes a slide rail (61), a clamping rod (62), an eccentric wheel (63) and a handle (64). The top of the lifting clamping platform body (1) is fixedly connected to six slide rails (61), and the top of each slide rail (61) is slidably connected to a clamping rod (62).

5. The orifice sleeve lifting and clamping platform according to claim 4, characterized in that: Each slide rail (61) has an eccentric wheel (63) rotatably mounted on its top. Each eccentric wheel (63) has a handle (64) fixedly connected to its outer side. The eccentric position of the eccentric wheel (63) abuts against the outer wall of the clamping rod (62).

6. The orifice sleeve pulling clamping platform according to claim 2, characterized in that: The threaded rod (72) is fixedly connected to a hexagonal knob at the end away from the clamping block (73), and the lifting clamping platform body (1) is a frame structure made of welded steel profiles.

7. The orifice sleeve lifting and clamping platform according to claim 1, characterized in that: The four corners of the lifting and clamping platform body (1) are provided with mounting holes (5), and anchor rods (4) are inserted into the mounting holes (5).

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